2021
DOI: 10.3389/fmed.2021.666772
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Juvenile Spondyloarthritis: What More Do We Know About HLA-B27, Enthesitis, and New Bone Formation?

Abstract: Juvenile spondyloarthritis (JSpA) refers to a diverse spectrum of immune-mediated inflammatory arthritides whose onset occurs in late childhood and adolescence. Like its adult counterpart, JSpA is typified by a strong association with human leukocyte antigen-B27 (HLA-B27) and potential axial involvement, while lacking rheumatoid factor (RF) and distinguishing autoantibodies. A characteristic manifestation of JSpA is enthesitis (inflammation of insertion sites of tendons, ligaments, joint capsules or fascia to … Show more

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Cited by 8 publications
(7 citation statements)
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References 117 publications
(153 reference statements)
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“…Juvenile spondyloarthritis (JSpA) may be defined as a heterogeneous group of diseases, with varying degrees of peripheral and axial arthritis and enthesitis and a strong association with human leukocyte antigen-B27 (HLA-B27), affecting children under 16. JSpA is a generic term that not only includes children meeting the criteria for juvenile idiopathic arthritis (JIA), categories of seronegative or seropositive enthesitis related arthritis (ERA) and juvenile psoriatic arthritis (JPsA), but also juvenile ankylosing spondylitis (JAS), reactive arthritis and inflammatory bowel disease (IBD)-associated arthritis [ 9 ]. ERA and JPsA account for most cases of JSpA, with ERA being the most common (50%).…”
Section: Juvenile Spondyloarthritismentioning
confidence: 99%
See 1 more Smart Citation
“…Juvenile spondyloarthritis (JSpA) may be defined as a heterogeneous group of diseases, with varying degrees of peripheral and axial arthritis and enthesitis and a strong association with human leukocyte antigen-B27 (HLA-B27), affecting children under 16. JSpA is a generic term that not only includes children meeting the criteria for juvenile idiopathic arthritis (JIA), categories of seronegative or seropositive enthesitis related arthritis (ERA) and juvenile psoriatic arthritis (JPsA), but also juvenile ankylosing spondylitis (JAS), reactive arthritis and inflammatory bowel disease (IBD)-associated arthritis [ 9 ]. ERA and JPsA account for most cases of JSpA, with ERA being the most common (50%).…”
Section: Juvenile Spondyloarthritismentioning
confidence: 99%
“…The clinical feature that differentiates pediatric CRMO from SpA is mainly the localization of inflammation. In CRMO, inflammation is mainly localized in the bones and affects the metaphysis of the long bones, especially in the lower extremities (78%) near the knees and ankles, as well as in the axial skeleton (48–68%) [ 9 ]. In SpA, the main target sites are the spine and the pelvic bones [ 24 ].…”
Section: Links Between Crmo and Jspamentioning
confidence: 99%
“…The impact of biomechanical forces has been underexplored in juvenile SpA (jSpA). 21 Several unanswered questions remain, including whether walking with adultlike velocity with immature lower limbs 22 and aberrant tendon stiffening amidst increasing body mass during childhood 23 apply increased forces on the entheses of susceptible children and hence favour disease development.…”
Section: Juvenile Spamentioning
confidence: 99%
“…Therefore, it is plausible that patients with this JIA subtype may develop spondylitis over time. However, HLA-B27 is also present in 5–15% of the general population, limiting its specificity as a diagnostic test [ 16 ].…”
Section: Introductionmentioning
confidence: 99%